Testing

Testing is software development.

Software development is writing code. Testing makes sure the code actually works, so in a nutshell: Testing is software development :-)

Phan is a static analyzer for PHP. Phan project on GitHub It will help you write better PHP7 code. You'll need the Abstract Syntax Tree generated by PHP. You can read a tutorial for how to get Phan working in your project

The MediaWiki project uses Phan. See the article Continuous_integration/Phan

Links

1. https://github.com/wikimedia/mediawiki-tools-phan
2. https://github.com/phan/phan
3. https://www.mediawiki.org/wiki/Continuous_integration/Entry_points
4. https://www.mediawiki.org/wiki/Continuous_integration/Phan
5. https://www.mediawiki.org/wiki/Best_practices_for_extensions#File_structure
6. https://github.com/nikic/php-ast

Static Analysis of MediaWiki

For some current analysis see https://doc.wikimedia.org/mediawiki-core/master/phpmetrics/complexity.html

The on-wiki documentation and even the upstream projects do not exactly provide a usable guide for MediaWiki extension developers to actually use Phan. If you download MediaWiki and composer update (to get dev dependencies) and also install PHP-AST, then you should be able to run composer phan or ./vendor/bin/phan -p . But, that analyzes the entire MediaWiki codebase, and does not analyze your extension (unless you specifically add a proper .phan/config.php file to your extension).

Mark Hershberger provides a good example of what that might look like in his CommentStreams configuration

<?php
$cfg = require __DIR__ . '/../vendor/mediawiki/mediawiki-phan-config/src/config.php';
$extensions = [ "Echo", "SocialProfile" ];
// Assume this extension exists in a directory with a bunch of other extensions that may, or may not be, $IP/extensions
$extDir = realpath( __DIR__ . "/../.." );
$dirList = array_filter(
	array_map( fn ( $dir ): string => "$extDir/$dir", $extensions ),
	fn ( $dir ): bool => is_dir( $dir )
);
$cfg['directory_list'] = array_merge( $cfg['directory_list'] ?? [], $dirList );
$cfg['exclude_analysis_directory_list'] = array_merge(
	$cfg['exclude_analysis_directory_list'] ?? [], $dirList
);
$cfg['suppress_issue_types'][] = 'PhanUndeclaredConstant';
return $cfg;

the more traditional form of that is

$cfg = require __DIR__ . '/../vendor/mediawiki/mediawiki-phan-config/src/config.php';

$cfg['directory_list'] = array_merge(
	$cfg['directory_list'],
	[
		'../../extensions/Echo',
		'../../extensions/SocialProfile',
	]
);
$cfg['exclude_analysis_directory_list'] = array_merge(
	$cfg['exclude_analysis_directory_list'],
	[
		'../../extensions/Echo',
		'../../extensions/SocialProfile',
	]
);

return $cfg;

PHPStan

https://phpstan.org/

Psalm

https://psalm.dev/

PHP is the HyperText Preprocessor = the most popular programming language for the web

Internet Protocol. An IP Address is a host or device name in numeric form.